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System Design - 24. Geospatial Indexing: How Uber Finds the Nearest Driver Among Millions in Milliseconds

System Design - 24. Geospatial Indexing: How Uber Finds the Nearest Driver Among Millions in Milliseconds

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9 min read
Reverse Cross-Border E-Commerce Microservice Decomposition and High-Concurrency Order Processing Based on Spring Cloud Alibaba

Reverse Cross-Border E-Commerce Microservice Decomposition and High-Concurrency Order Processing Based on Spring Cloud Alibaba

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2 min read
Stop Parsing Raw Stack Traces: Debugging Virtual Thread Deadlocks with JDK 26 JSON Thread Dumps

Stop Parsing Raw Stack Traces: Debugging Virtual Thread Deadlocks with JDK 26 JSON Thread Dumps

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2 min read
I Stopped Tweaking Prompts. Here's How I Cut LLM Hallucinations to 6%.

I Stopped Tweaking Prompts. Here's How I Cut LLM Hallucinations to 6%.

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3 min read
[System Design] Ride-Hailing Dispatch Algorithm: How Uber DISCO & Grab DispatchGym Match Drivers

[System Design] Ride-Hailing Dispatch Algorithm: How Uber DISCO & Grab DispatchGym Match Drivers

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10 min read
Predictive Alpha: Pipeline Engineering for Real-Time Machine Learning Inference

Predictive Alpha: Pipeline Engineering for Real-Time Machine Learning Inference

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5 min read
The Rate‑Limiter Jedi: Mastering CAP Like a Lightsaber Duel

The Rate‑Limiter Jedi: Mastering CAP Like a Lightsaber Duel

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5 min read
Rate Limiting — What Happens When Too Many Requests Hit Your Server

Rate Limiting — What Happens When Too Many Requests Hit Your Server

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3 min read
Indexing: The Force Awakens in My Rate Limiter Quest

Indexing: The Force Awakens in My Rate Limiter Quest

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4 min read
Could We Build a World Without Cash? Exploring Universal Biometric Identity and Digital Credits

Could We Build a World Without Cash? Exploring Universal Biometric Identity and Digital Credits

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2 min read
HLD Fundamentals #3: Monolithic vs Microservices Architecture

HLD Fundamentals #3: Monolithic vs Microservices Architecture

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4 min read
UUID vs ULID vs NanoID: Which Identifier Should You Use in 2026?

UUID vs ULID vs NanoID: Which Identifier Should You Use in 2026?

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4 min read
Building a RAG pipeline in a weekend

Building a RAG pipeline in a weekend

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4 min read
Blue-Green Deployments: Instant Rollbacks & Zero Downtime

Blue-Green Deployments: Instant Rollbacks & Zero Downtime

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4 min read
The Evolution of Circuit Compression

The Evolution of Circuit Compression

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5 min read
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